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    <script>
        //1.替换字符 replace('被替换的字符'，‘替换为的字符);，只会替换第一个
        var str = 'andy';
        console.log(str.replace('a', 'b'));
        //有一个字符串 ‘aaaosdfdfofdfodfdfo'要求把所有的'o'替换为*
        var str1 = 'aaaosdfdfofdfodfdfo';
        while (str1.indexOf('o') !== -1) {
            str1 = str1.replace('o', '*');
        }
        console.log(str1);



        //2.字符转换为数组 split('分隔符')      join  把数组转换为字符串
        var str2 = 'red,pink,blue';
        console.log(str2.split(','));

        var str3 = 'red&pink&blue';
        console.log(str3.split('&'));

    </script>
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